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Marquise|Lab Grown|IGI

3.05ct D VS1 Marquise Lab Grown Diamond

EX • D/VS1 • IGI LG845601708

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG845601708

Diamond specifications and retailer prices

From £619 GBP
$829 USD
As of October 30, 2026
Save £2,086 GBP (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,941 GBP at Brilliant Earth · As of October 14, 2026
View at Brilliant Earth

About this 3.05ct lab-grown marquise diamond

This 3.05ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG845601708 or 845601708. Listed at 13 retailers as of October 29, 2026, with a 337% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.05
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845601708
Dimensions15.45 × 7.38 × 4.74 mm
L/W Ratio2.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.45 mm7.38 mm3.05 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845601708
Side View
Table 61.0%Crown 35.2°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 64.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,941 GBP|Low: £619 GBP|High: £2,941 GBP|Avg: £1,674 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 15£619 GBP
Retailer 10£673 GBP
Retailer 9£831 GBP
Retailer 13£937 GBP
Retailer 14£966 GBP
Retailer 4£1,155 GBP
Retailer 8£1,157 GBP
Retailer 6£1,163 GBP
Retailer 2£1,621 GBP
Retailer 11£1,650 GBP
Retailer 3£2,018 GBP
Retailer 7£2,413 GBP
Retailer 5£2,573 GBP
Retailer 12£2,705 GBP
Brilliant Earth£2,941 GBP

10 data points across 15 retailers

13 retailers£619 GBP to £2,705 GBP

A
Cheapest Retailer
-
£619 GBP
$829 USD
A
Retailer 2
-
£673 GBP
$902 USD
View
A
Retailer 3
-
£831 GBP
HK$8,700 HKD
View
A
Retailer 4
-
£937 GBP
$1,256 USD
View
Retailer 5
-
£966 GBP
View
Price last confirmed 15 days ago
B+
Retailer 6
-
£1,155 GBP
$1,548 USD
View
B+
Retailer 7
-
£1,157 GBP
$1,550 USD
View
B+
Retailer 8
-
£1,621 GBP
A$3,341 AUD
View
B+
Retailer 9
-
£1,650 GBP
$2,211 USD
View
B
Retailer 10
-
£2,018 GBP
$2,704 USD
View
B
Retailer 11
-
£2,413 GBP
SGD 4,370 SGD
View
B
Retailer 12
-
£2,705 GBP
View
Most Expensive
Brilliant Earth
21783662A · Oct 14
£2,941 GBP
$3,940 USD
View
Price last confirmed 17 days ago
12 more retailers have this diamond
Prices start from £619 GBPSave up to £2,086 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.05ct Marquise
£619 GBP